Balancing of hormonal biosynthesis and catabolism pathways, a strategy to ameliorate the negative effects of heat stress on reproductive growth

Kaur, Harleen; Ozga, Jocelyn A.; Reinecke, Dennis M.

doi:10.1111/pce.13820

Cited by 28 publications

(16 citation statements)

References 99 publications

(173 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It may suggest that Brassica plants have little abilities to protect themselves in long-term heat stress and, therefore, led to a high abortion rate, decreased yield, and in the case of 26 DAP seeds, reduced dormancy. These results contrast with research done on pea seeds (Kaur et al , 2020) and rice panicles (Wu et al , 2016).…”

Section: Discussioncontrasting

confidence: 97%

Effects of long-term high-temperature stress on reproductive growth and seed development in development inBrassica napus

Mácová

Prabhullachandran

Štefková

et al. 2021

Preprint

View full text Add to dashboard Cite

Brassica napus is the second most important oilseed crop worldwide. Increasing average temperatures and extreme weather have a severe impact on rapeseed yield. We determined the response of three cultivars to different temperature regimes (21/18 °C, 28/18 °C and 34/18 °C), focusing on the plant appearance, seed yield, seed quality, seed viability, and embryo development. Our microscopic observations identified that embryo development is affected by high temperatures. We noticed an acceleration of its development, in addition to pattern defects. Reduced fertilization rate, increased abortion rate, and preharvest sprouting would be responsible for the low seed yield at the high-temperature regime. Hormone profiling indicates that reduced auxin levels in young seeds may cause the observed embryo pattern defects. Moreover, reduced seed dormancy may result from low ABA and IAA levels in mature seeds. Glucosinolates and oil composition measurements suggest reduced seed quality. These identified cues help understand seed thermomorphogenesis and pave the way to the development of thermoresilient rapeseed plants.

show abstract

Section: Discussioncontrasting

confidence: 97%

Effects of long-term high-temperature stress on reproductive growth and seed development in development inBrassica napus

Mácová

Prabhullachandran

Štefková

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…Growing evidence also suggests that auxin has a prominent role in mitigating environmental fluctuations through moderation of plant growth and development (Kaur et al 2021b; Song et al 2019). In recent years, emerging roles of sugars and their signaling components (such as TOR) have been observed responding to a variety of environmental stresses (Bakshi et al 2017; Fu et al 2020; Sharma et al 2019; Wang et al 2018).…”

Section: Conclusion and Future Perspectivesmentioning

confidence: 99%

Role of sugar and auxin crosstalk in plant growth and development

Mishra

Sharma

Laxmi

2021

Physiologia Plantarum

View full text Add to dashboard Cite

Under the natural environment, nutrient signals interact with phytohormones to coordinate and reprogram plant growth and survival. Sugars are important molecules that control almost all morphological and physiological processes in plants, ranging from seed germination to senescence. In addition to their functions as energy resources, osmoregulation, storage molecules, and structural components, sugars function as signaling molecules and interact with various plant signaling pathways, such as hormones, stress, and light to modulate growth and development according to fluctuating environmental conditions. Auxin, being an important phytohormone, is associated with almost all stages of the plant's life cycle and also plays a vital role in response to the dynamic environment for better growth and survival. In the previous years, substantial progress has been made that showed a range of common responses mediated by sugars and auxin signaling. This review discusses how sugar signaling affects auxin at various levels from its biosynthesis to perception and downstream gene activation. On the same note, the review also highlights the role of auxin signaling in fine-tuning sugar metabolism and carbon partitioning. Furthermore, we discussed the crosstalk between the two signaling machineries in the regulation of various biological processes, such as gene expression, cell cycle, development, root system architecture, and shoot growth. In conclusion, the review emphasized the role of sugar and auxin crosstalk in the regulation of several agriculturally important traits. Thus, engineering of sugar and auxin signaling pathways could potentially provide new avenues to manipulate for agricultural purposes.

show abstract

“…Hormones, as important small molecules for regulating the metabolism, play a vital role in responding to abiotic stresses (Kaur et al, 2020;Kurepin et al, 2015). Among the hormones that have been identified, abscisic acid (ABA) and melatonin (MT) are two of the most important in the regulation of antioxidant protection under environmental stresses (Li et al, 2019;Sahay et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Beneficial effects of abscisic acid and melatonin in overcoming drought stress in cotton (Gossypium hirsutumL.)

Zhang

et al. 2021

Physiologia Plantarum

View full text Add to dashboard Cite

Pot experiments were performed to study the effects of abscisic acid (ABA) and melatonin (MT) on cotton drought tolerance and to explore their combined effects. ABA or MT spraying promoted water status and antioxidant capacity of drought-stressed leaves, which was conducive to scavenge ROS, finally increasing lint yield. However, the mitigation mechanisms of ABA and MT on drought were not identical, which were mainly manifested as: (1) ABA increased the relative water content (RWC) of drought-stressed leaves via, reducing water loss, but MT increased it via, promoting water uptake efficiency; (2) for enzymatic antioxidant system, ABA and MT might modulate different kinds of superoxide dismutase to catalyze the reduction of O 2 À under drought; and (3) for ascorbic acid (AsA)-glutathione (GSH) cycle, MT increased the glutathione reductase activity in drought-stressed leaves, but ABA did not. ABA + MT spraying led to higher leaf RWC and total antioxidant capacity than single hormone under drought, leading to a lower H 2 O 2 level. For the enzymatic antioxidant system, single hormone treatment affected Cu/ZnSOD or MnSOD expression, but ABA + MT upregulated both genes in drought-stressed leaves. Hormones combined application also had higher CAT expression than single hormone. For AsA-GSH cycle, ABA + MT had higher dehydroascorbic acid reductase activity than single hormone, resulting in higher AsA content. Moreover, hormones combined application caused higher ascorbate peroxidase activity than single hormone, suggesting that their combination synergistically improved the ability of AsA to eliminate ROS. All these confirmed that ABA plus MT had synergistic effects on improving crop drought resistance.

show abstract

Balancing of hormonal biosynthesis and catabolism pathways, a strategy to ameliorate the negative effects of heat stress on reproductive growth

Cited by 28 publications

References 99 publications

Effects of long-term high-temperature stress on reproductive growth and seed development in development inBrassica napus

Effects of long-term high-temperature stress on reproductive growth and seed development in development inBrassica napus

Role of sugar and auxin crosstalk in plant growth and development

Beneficial effects of abscisic acid and melatonin in overcoming drought stress in cotton (Gossypium hirsutumL.)

Contact Info

Product

Resources

About